5-240

FAST AND LS TTL DATA

1-OF-10 DECODER/DRIVER

OPEN-COLLECTOR

The SN54 / 74LS145, 1-of-10 Decoder/Driver, is designed to accept BCD

inputs and provide appropriate outputs to drive 10-digit incandescent

displays. All outputs remain off for all invalid binary input conditions. It is

designed for use as indicator/relay drivers or as an open-collector logic circuit

driver. Each of the high breakdown output transistors will sink up to 80 mA of

current. Typical power dissipation is 35 mW. This device is fully compatible

with all TTL families.

CONNECTION DIAGRAM DIP (TOP VIEW)

14

13

12

11

10

9

1

2

3

4

5

6

7

16

15

8

VCC

Q0

P0

P1

P2

P3

Q8

Q9

Q7

Q1

Q2

Q3

Q4

Q5

Q6 GND

PIN NAMES

LOADING (Note a)

HIGH

LOW

P0, P1, P2, P3

Q0 to Q9

BCD Inputs

Outputs (Note b)

0.5 U.L.

Open Collector

0.25 U.L.

15 (7.5) U.L.

NOTES:

a) 1 TTL Unit Load (U.L.) = 40

µA HIGH/1.6 mA LOW.

b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 15 U.L. for Commercial (74)

Temperature Ranges.

LOGIC DIAGRAM

INPUTS

INPUT

INVERTERS

DECODE/DRIVER

GATES

OUTPUTS

P0

P1

P2

P3

0

1

2

3

0

1

2

3

Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9

SN54/74LS145

1-OF-10 DECODER/ DRIVER

OPEN-COLLECTOR

LOW POWER SCHOTTKY

J SUFFIX

CERAMIC

CASE 620-09

N SUFFIX

PLASTIC

CASE 648-08

16

1

16

1

ORDERING INFORMATION

SN54LSXXXJ

Ceramic

SN74LSXXXN

Plastic

SN74LSXXXD

SOIC

16

1

D SUFFIX

SOIC

CASE 751B-03

LOGIC SYMBOL

VCC = PIN 16

GND = PIN 8

15 14 13 12

P0 P1 P2 P3

Q0 Q1 Q2 Q3 Q4

Q6 Q7 Q8 Q9

Q5

1 2 3 4 5 6 7 9 10 11